avast! Free Antivirus is a popular free antivirus for Windows that has just been updated to version 6.Besides efficient protection against viruses and spyware, avast! Free Antivirus features eight real-time shields that keep your system safe from online threats in various areas: web browsing, email, instant messaging, P2P and more – plus the two new Script and Behavior Shields. The eight shields in avast! Free Antivirus! can be enabled or disabled individually, and have their own settings.Two new interesting tools in avast! Free Antivirus 6 are the Web reputation plug-in, which informs you about the reliability of the website you’re currently visiting, and the AutoSandbox, which enables you to test suspicious programs without any risk to your computer. Finally, avast! Free Antivirus 6 now includes a desktop gadget from which you can open the program’s main window, perform a system scan or force a database update.The interface in avast! Free Antivirus 6 hasn’t changed much from previous versions. The design is basically the same, only bigger – something that may not be comfortable for some users. Then again, the most important feature in a security tool is not looks, but being able to protect your system in an effective, non-intrusive way – jus like avast! Free Antivirus does.